Evolution of Sexual Dichromatism. 2. Carotenoids and Melanins Contribute to Sexual Dichromatism in New World Orioles (Icterus spp.)

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dc.contributor.authorHofmann, Christopher M.
dc.contributor.authorCronin, Thomas W.
dc.contributor.authorOmland, Kevin E.
dc.date.accessioned2018-11-09T17:36:07Z
dc.date.available2018-11-09T17:36:07Z
dc.date.issued2008-02-05
dc.description.abstractSeveral recent studies have investigated how different proximate mechanisms of color production contribute to sexual dichromatism. These studies suggest that carotenoid pigments—which are frequently subject to sexual selection—are more strongly associated with sexual dichromatism than melanins. This reasoning implicitly assumes that increased male elaboration leads to sexual dichromatism. However, sexual dichromatism can be generated through multiple evolutionary pathways, including decreases in female elaboration. We examined whether evolutionary changes in carotenoid- and melanin-based plumage were correlated within New World orioles (Icterus spp.), a genus in which male elaboration is ancestral and only female elaboration varies. We found a significant correlation between evolutionary changes in the degree of carotenoid and eumelanin sexual dichromatism. These findings differ from those of previous comparative studies and suggest the possibility of interesting differences when different evolutionary pathways—such as changes in male versus female coloration—lead to sexual dichromatism.en_US
dc.description.urihttp://americanornithologypubs.org/doi/pdf/10.1525/auk.2008.07113en_US
dc.format.extent6 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/M2PG1HS31
dc.identifier.citationChristopher M. Hofmann, Thomas W. Cronin, Kevin E. Omland, Evolution of Sexual Dichromatism. 2. Carotenoids and Melanins Contribute to Sexual Dichromatism in New World Orioles (Icterus spp.), The Auk 125(4):790-795. 2008, https://doi.org/10.1525/auk.2008.07113en_US
dc.identifier.urihttps://doi.org/10.1525/auk.2008.07113
dc.identifier.urihttp://hdl.handle.net/11603/11937
dc.language.isoen_USen_US
dc.publisherAmerican Ornithological Societyen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Biological Sciences Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsAttribution-NonCommercial-NoDerivs 2.0 Generic (CC BY-NC-ND 2.0)*
dc.rights© The American Ornithologists’ Union, 2008
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/2.0/*
dc.subjectcomparative methodsen_US
dc.subjectIcterusen_US
dc.subjectindependent contrastsen_US
dc.subjectloss of elaborationen_US
dc.subjectsexual dichromatismen_US
dc.titleEvolution of Sexual Dichromatism. 2. Carotenoids and Melanins Contribute to Sexual Dichromatism in New World Orioles (Icterus spp.)en_US
dc.typeTexten_US

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